Pyglet：如果我应用 TextureGroup，则不会绘制形状

Question

我正在尝试使用通过 TextureGroup 应用的纹理贴图绘制一些形状：

from pathlib import Path

import pyglet
from pyglet import gl

BASE_PATH = Path(__file__).resolve().parent.parent

TEXTURE_PATH = BASE_PATH / "textures"


def load_texture(filename):
    return pyglet.image.load(TEXTURE_PATH / filename).get_texture()


class HexWindow(pyglet.window.Window):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        textures = {
            "desert": load_texture("hexmap-iso-desert.png"),
            "forest": load_texture("hexmap-iso-forest.png"),
            "hills": load_texture("hexmap-iso-hills.png"),
            "mountains": load_texture("hexmap-iso-mountains.png"),
            "ocean": load_texture("hexmap-iso-ocean.png"),
            "plains": load_texture("hexmap-iso-plains.png"),
            "swamp": load_texture("hexmap-iso-swamp.png"),
        }

        self.batch = pyglet.graphics.Batch()

        self.texture_groups = {
            name: pyglet.graphics.TextureGroup(texture)
            for name, texture in textures.items()
        }

        self._shapes = [
            pyglet.shapes.Circle(
                batch=self.batch,
                group=self.texture_groups["desert"],
                segments=6,
                x=0,
                y=0,
                radius=100,
                color=(50, 225, 30),
            ),
            pyglet.shapes.Circle(
                batch=self.batch,
                group=self.texture_groups["ocean"],
                segments=6,
                x=300,
                y=300,
                radius=100,
                color=(225, 30, 30),
            )
        ]

    def on_draw(self):
        gl.glClearColor(0, 0.3, 0.5, 0)
        self.clear()

        self.batch.draw()


if __name__ == "__main__":
    _ = HexWindow(1280, 720)
    pyglet.app.run()

如果我删除 group=self.texture_groups["ocean"], args 到我的 Circles 然后我得到一个红色和绿色的十六进制。

但是当我应用纹理组时没有绘制任何东西。

虽然纹理有效，因为我还有一些其他类似的代码：

class TexturedSquare:
    def __init__(self, width, height, xpos, ypos, texture):
        self.xpos = xpos
        self.ypos = ypos
        self.angle = 30  # degrees
        self.size = 2
        self.texture = texture
        x = width/2.0
        y = height/2.0
        self.vlist = pyglet.graphics.vertex_list(
            4,
            ('v2f', [-x, -y, x, -y, -x, y, x, y]),
            ('t2f', [0, 0, 1, 0, 0, 1, 1, 1]),
        )

    def draw(self):
        gl.glPushMatrix()
        gl.glTranslatef(self.xpos, self.ypos, 0)
        gl.glRotatef(self.angle, 0, 0, 1)
        gl.glScalef(self.size, self.size, self.size)

        gl.glEnable(self.texture.target)
        gl.glActiveTexture(gl.GL_TEXTURE0)
        gl.glBindTexture(self.texture.target, self.texture.id)
        self.vlist.draw(gl.GL_TRIANGLE_STRIP)
        gl.glDisable(self.texture.target)

        gl.glPopMatrix()

如果我将其添加到我的 HexWindow class 中，则会绘制带纹理的正方形：

def __init__(self, *args, **kwargs):
    ...
    # everything else as before, plus

    self.square1 = TexturedSquare(
        120, 120, 700, 300, textures["forest"]
    )

def on_draw(self):
    gl.glClearColor(0, 0.3, 0.5, 0)
    self.clear()

    self.square1.draw()

    self.batch.draw()

为什么 pyglet.graphics.TextureGroup 不起作用？

Answer 1

之所以不起作用是因为Shapes模块本身不处理纹理，所以没有设置纹理坐标顶点数据。您将必须对 Shape 进行子类化，并更改它们设置顶点数据的区域以说明 t2f，就像在您的 TexturedSquare 示例中一样。

Pyglet：如果我应用 TextureGroup，则不会绘制形状

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